Relevant problems of influence of the Dniprovs’ke reservoir eutrophication by the household sewage on the water quality indices in fishing zones were studied. Investigations disclosed the excess of the maximum permissible concentration of some indices developed for a fishing reservoir.

Content of TBA-active products in rat’s blood plasma was investigated during the Guerin carcinoma development and introduction of cis-platine and cluster Rhenium substances with organic ligands. It was shown that Rhenium substances had essential antioxidant effects and changed the dynamics of a tumor growth. It was drawn the conclusion on importance of further in vivo experimental investigations of the Rhenium substances with cluster fragment and organic ligands in an organism of changed redox state.

The experimental results of changes of the catalase activity in the maize germinants under the influence of the lead ions and low doses of radiation separately and simultaneously are presented. The consentration of the lead was 1 · 10 – 4 M and the radiation dozes were 2, 5, 10, and 15 R.

Серед досліджених видів роду Hydrangea L. виявлені найпристосованіші до умов степового Придніпров’я. H. cinerea Stall. та H. bretschneider Dipp. рекомендовані для використання у зеленому будівництві при озелененні територій.

Influence of the maleinic acid hydrazine on the formation of above-ground part of the turf forming grasses depends on the temperature of seeds treatment and germination. The method of selection of the seedlings with elongated developmental interval has been proposed for the investigations of fist ontogenesis stages. The concept of a retardant’s physiological activity coefficient and a temperature coefficient of development are proposed.

Pattern of phytomass spatial distribution and interrelation between spreading 15 and 17-years-old robinia plantings and forest-vegetable conditions created on the revegetated areas of Western Donbas are analyzed in the present article. Primary productivity depends on thickness and fertility of used substrates, relief and landing density.

It was found out that in addition to lactic acid the lactic bacteria, isolated from different natural sources and sour-milk products, produce some substances having antagonistic activity towards a wide range of pathogenic and opportunistic pathogenic microorganisms. The gain of antagonistic properties was often noticed for the lactobacilli but seldom for coccal lactic bacteria. At the same time the antagonistic activity depended on the strain and cultivation conditions.

Influence of geomagnetic fields (GMF) on the silkworm culture was studied. The GMF stress-induced injury to the silkworms involves deterioration of graded and processing characteristics of the silk cocoons in years of high level of the geomagnetic activity.

Taxonomic composition of soil invertebrates and peculiarities of their vertical distribution in the Samara River flood-lands after spring tide is under consideration.

This article is devoted to stimulation action of lytic enzyme preparations. The treatment of the plant seeds by these preparations increased their germination and had positive effect on plant development.